@pytest.mark.parametrize

# Function to test
def calculate_average(num1, num2):
    return (num1 + num2) / 2

# Test function using pytest's parametrize
import pytest

@pytest.mark.parametrize(
    "num1, num2, expected",
    [
        (10, 20, 15),
        (20, 30, 25),
        (5, 5, 5)
    ])
def test_calculate_average(num1, num2, expected):
    assert (calculate_average(num1, num2) == expected), f"Sum of {num1} and {num2} should be equal to {expected}"

id

 @pytest.mark.parametrize("num1, num2, expected", [
    pytest.param(10, 20, 15, id="integers"),
    pytest.param(20, 30, 25, id="more integers"),
    pytest.param(5, 5, 5, id="equal numbers")
])
def test_calculate_average_with_ids(num1, num2, expected):
    assert calculate_average(num1, num2) == expected

pytest.param ids

@pytest.mark.parametrize("num1, num2, expected", [
    (10, 20, 15),
    (20, 30, 25),
    (5, 5, 5)
], ids=["integers", "more integers", "equal numbers"])
def test_calculate_average_with_ids(num1, num2, expected):
    assert calculate_average(num1, num2) == expected

===================== test session starts ======================
collected 3 items

test_example.py::test_calculate_average_with_ids[integers] FAILED
test_example.py::test_calculate_average_with_ids[more integers] PASSED
test_example.py::test_calculate_average_with_ids[equal numbers] PASSED

=========================== FAILURES ===========================
________________ test_calculate_average_with_ids[integers] ________________

num1 = 10, num2 = 20, expected = 15

    def test_calculate_average_with_ids(num1, num2, expected):
>       assert calculate_average(num1, num2) == expected
E       assert 20 == 15 
E        +  where 20 = calculate_average(10, 20)

test_example.py:10: AssertionError
================== 1 failed, 2 passed in 0.23s ==================